A study reveals that you can obtain better sleep with an open window, and also perform better at cognitive functions the next morning.

Better Sleep with an Opened Window (research study concludes)

Better sleep with an opened window? A team of Danish researchers concludes that the air quality in your bedroom while you sleep could be linked to better work performance. The researchers conducted a field intervention of 40 bedrooms in Denmark over a two-week period and monitored participants’ sleep quality using a wearable device. Additionally, participants logged their daily activities and sleep electronically. Every morning, they took a three-minute cognitive-abilities test.

The results revealed that participants who had their windows open reported experiencing deep sleep. 87% of them expressing this compared to 70% of those who slept with closed windows. Furthermore, participants who slept with an open window performed better on the cognitive test the following morning.

This suggests that individuals should ventilate their bedrooms with clean outdoor air or supply them with air that is equivalent to clean outdoor air during the night.

Highlights of the Research Study:

  • Researchers conducted a field intervention study in 40 bedrooms.
  • Perceived air quality improved and the concentration of CO2, VOCs, and PM10 decreased when a window was open.
  • Objectively measured and subjectively rated sleep quality improved after sleeping with an open window.
  • Opening a bedroom door reduced CO2 concentration but did not provide any of the above benefits.

Learn more about our Early Intervention Protocol at Peak Ergonomics.